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(No Model.)

' T. H. HUTCHINS. STOP FOR UHEGK ROW WIRE, NO. 295152 Patented Mar. 18,1884.

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THOMAS H. HUTCHIN S, OF LIOLIET, ILLINOIS, ASSIGNOR TO THE ILLINOISMANUFACTURING COMPANY, OF SAME PLACE.

STOP FOR CHECK-ROW WIRES.

SPECIFICATION forming part of Letters Patent No, 295,252, dated March18, 1884.

Application filed December 26, 1883. (No model.)

To all whom it may concern.-

Be it known that I, TEOMAS H. Hummus, a citizen of the United States ofAmerica, residing at Joliet, in the county of Will and State ofIllinois, have invented certain new and useful Improvements in Stops forCheck- Row Wires, of which the following is a specification, referencebeing had therein to the accompanying drawings.

Figure 1 is a perspective view of a stop on the check -row wire; Fig. 2,a perspective view of one of the halves of a stop; and Fig. 3, aperspective view of one of the halves of a stop, showing the mode ofattaching it to the check-row wire.

This invention relates to certain improvements in the construction ofthe stops of a check-row wire for'use on a seed-planter.

The stop is composed of the two semi-spherical halves B and B. CavitiesD of similar form, in the inner faces of the halves, allow room for thecord or wire W as it passes around the central rivet, S. Suitableopenvings at each end of said cavity D permit the wire or cord to passthrough. The wire N is furnished at suitable intervals with the bends orcrimps W, conforming to the shape of the cavity D, and prevent the stopfrom sliding along on the wire 'W.

The principal new feature in this invention is in serrating the meetingedges of said halfspheres B and B, or providing them with theproject-ions or teeth a in one half and the corresponding notches, c, inthe opposite half in such manner that when thetwo halves are united theywill appear as shown in Fig. 1. Heretofore the meeting surfaces of saidhalfspheres have been smooth and without teeth or serrated surfaces forcontact, the result of which has been that in actual use one of thehalves usually comes in contact with the machine before the other,causing it to partially rotate, and also to slide more or less on theopposite half, the consequence of which is the central rivet, S, isbroken and loosened, and the two halves become detached and fall off.All the strainand resistance of necessity comes on the rivet, and it isreadily broken where the meeting surfaces of the two half-spheres aresmooth. The object of thus sex-rating or forming teeth on the meetingsurfaces of said half-spheres is to prevent any such rotation of 1 theone half on the other, and to prevent one halffroni sliding on the othershould one half come in contact with the planter before the other. Inthis invention the rivet S has only to hold the two halves together, andis entirely relieved from the strain incident to such rotation orsliding of the halves one on the other. The teeth a and notches 0, intowhich they fit, thoroughly prevent all such difficulty.

The two semi-spheres B and B are held together by a rivet. S, that maypass through a hole, S, in each half; or one half may have an integralrivet, as shown in Fig. 3, as may be desired, the latter constructionbeing deemed preferable; also, when the half-spheres become a littleloose, one from the other, they will, if not provided with the serratedsurfaces, very soon cut the wire W and render it easily broken where itemerges from the stop, for the reason that as the machine travels backand forth over the wire it strikes and rotates the halfspheres in eitherdirection, so as to thus in jure the wire on either side, which isentirely prevented by the use of the teeth or serrations named.

Iain aware that it is common to use balls on a check-row wire or rope,composed of two parts or semispheres united by a central rivet or screwsimilar to this invention in that rethe meeting edges or surfaces of thetwo parts are provided with teeth or serrations, to intermesh with eachother, for the purpose specified. It is in thus providing the two partsTHOMAS H. HUTOHINS.

I'Vitncsses:

PERRY J. HoBBs, WM. J. HUTOHINS.

spcct; but I am not aware of any case where with such serrations thatthe novelty in this

